Advantages over standard insulation materials:
and environmentally friendly
and insulates at the same time
to salt spray and airborne pollution
metal roofs from extreme weather conditions
is a cool roof and walls important?
heat flow into a building from the outside is mainly through the
roof and, to a lesser extent, through the walls. The rate at which
the heat flows into a building depends ultimately on 2 factors :
outside surface temperature of the building (not the air temperature)
temperature inside the building.
rate of heat flow is proportional to the difference between these
two temperatures. The hotter the roof and walls, and the lower the
internal temperature, the greater the inward heat flow.
benefit does Solarcoat confer on a passive building?
there is no ventilation or cooling in the building, the internal
temperature will eventually become equal to the temperature of the
exterior surface. However, as well as depending on the temperature
difference, the flow of heat is also inversely proportional to the
'R-value' of the structure. Insulation, when fixed beneath the roof
and within the walls, increases the time that it takes for the interior
to reach the temperature of the exterior surfaces.
lower external surface temperatures that result from the use of
Solarcoat means that:
interior will never get as hot as it would if the structure was
well as not getting as hot inside, the building will take longer
to heat up, and
building will cool down more quickly at night as the outside temperature
benefit is there if the interior space is ventilated or cooled with
an air conditioner?
economic and environmental consequences of acheiving cooler external
surface temperatures using Solarcoat are:
same cooling power will result in a cooler temperature inside
the building, or
given inside room temperature can be maintained with less cooling
buildings are cheaper to keep cool, and
electricity consumption means lower greenhouse gas emissions.
does Solarcoat work?
easiest way to explain this is to say that Solarcoat works exactly
opposite to the way the black coating now used as a selective surface
on solar water heater panels (chrome black) works. Chrome black
absorbs 95% of the sun's shorter wavelength radiant energy (at 5000°K
), and limits emissions to only 9% of the longer infrared wavelength
energy from the collector surface (400°K). Hence, very little
of the heat that is gained is then lost through emissivity.
Because of this selectivity, the chrome black surface may get up
to 40°C hotter than the air temperature.
contrast, the Solarcoat product absorbs only 15% of the sun's heat
and is especially good at re-emitting most of this absorbed energy
away from the treated surface (over 95%). The end result is that
the exterior surface only gets about 5°C hotter than the ambient
air temperature. This compares with an untreated exterior surface
that gets 10°C - 20°C hotter than the ambient air temperature.
maintenance is needed?
specified and applied, Solarcoat treated surfaces do not require
maintenance over their life for 10 years if applied on an inacessible